The Parks Department got a sumptuous treat yesterday when the high bid for the right to sell hot dogs from two carts in front of the Metropolitan Museum came in at an astonishing $630,100.

That’s $54,110 more than the deal reached in 2006 with the current franchise holder, veteran dog man Thomas Makkos, who had pleaded for relief after an unauthorized competitor set up shop nearby.

Trying to be fair, the Parks Department agreed to seek new bids – fully expecting they’d be much lower that the $575,990 now being paid by Makkos. Indeed, even he cut his offer significantly to $468,110.

But Makkos was topped by Pasang Sherpa, who pushed the envelope with a total bid of $630,100.25.

“We don’t quite understand it,” said one official.

Parks Department officials say it will take a few weeks to sort out the bids, with the winner selected on criteria that includes quality of service.